Change the shortcuts

Open the Diktun settings, General tab. Each mode has its own line, and you record a combination simply by pressing the keys you want.

The three shortcuts deliberately share a common start. You never press three keys at the same instant: dictation starts on the first two, and if a third arrives afterwards the mode is upgraded mid-recording. Nothing is lost, because nothing has been transcribed yet.

A test button checks that the combination really reaches the system. That is what to use when a shortcut seems ignored: if the test sees nothing, another program took it before Diktun.